📂 Go File I/O

Go’s os and io/ioutil packages provide simple ways to read from and write to files.

📝 Example: Writing and Reading a File

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📖 Key Points

ioutil.WriteFile writes bytes to a file, creating it if it doesn’t exist.
File permission 0644 means read/write owner, read-only others.
ioutil.ReadFile reads entire file content as bytes.
Always check for errors when reading/writing files.
For more complex file handling, use the os package.

💡 Tip: Go 1.16 deprecated ioutil, so you can also use os.WriteFile and os.ReadFile in newer versions.